How to identify the quality and practicality of excavator parts

2026-08-25 15:33:54

　　The working environment of excavators has high dust and impact loads,and the quality of accessories directly affects construction efficiency.Distinguishing the quality of accessories should not only rely on their appearance,but also on practical methods such as packaging workmanship,material details,physical comparison,price and source,etc.,to avoid high imitation and inferior products.

　　Firstly,check the packaging label and certificate of conformity.The packaging of formal accessories is printed clearly,with the OE number,brand,specifications,and place of origin information of the parts printed,and accompanied by a product certificate of conformity.The original and brand part numbers are clearly engraved and not easily scratched off.Poor quality high imitation parts have rough packaging,blurry fonts,color cast,lack of certification,and mostly printed stickers with part numbers that can be easily scraped off by hand.Do not purchase accessories without packaging or labeling as much as possible.

　　Next,observe the workmanship and detailed craftsmanship.Comparing old and new accessories,the surface of genuine castings is smooth and flat,without pores,sand holes,burrs,and the edges and corners are treated neatly.Inspect the threads and sealing surfaces of hydraulic accessories,ensuring that the threads are uniform and free from slipping,and that the sealing surface is flat and not deformed;The Engine Parts look at the joint surface,with delicate processing patterns.Poor quality parts have rough casting,many burrs,rudimentary edge treatment,burrs on threads,uneven sealing surfaces,and are prone to oil and gas leakage after installation.Rotating bearings and gear accessories,genuine products rotate smoothly without any jamming or obvious looseness.

　　Then compare the weight and material.Same model accessories,high-quality parts made of solid materials,with a weight similar to old parts;Poor quality accessories are cut corners,with thin materials and low alloy content,and the overall weight is significantly lighter.Hydraulic Pumps,bearings,connecting rods and other load-bearing components have a large weight difference,and it can be basically determined that the materials used have shrunk.Rubber seals can be easily pressed,and good sealing rings have good toughness and quick rebound;Poor quality rubber is hard,prone to cracking,and not resistant to high temperature hydraulic oil.

　　We also need to view prices rationally and be wary of low price traps.If the quotation is much lower than the normal market range,it is highly likely to be high imitation refurbished parts.Don't believe that the appearance is the same.Many imitations have the same appearance,but the internal core materials are substandard.At the same time,distinguish the grade of accessories.There is a reasonable price difference between original parts,brand accessories,remanufactured parts,and auxiliary parts.If a merchant falsely claims that auxiliary parts are sold at a high price,they should be more discerning.

　　After receiving the goods,conduct a simple trial assembly inspection and prioritize selecting reliable channels.Conditions permit comparing hole positions and interface dimensions with old parts.Priority should be given to businesses that can provide quality assurance,and do not purchase refurbished parts from unknown sources.Don't be tempted by cheap core load-bearing components,and consider the cost of secondary exterior components appropriately.After assembly,conduct a no-load test to observe for any leaks,abnormal noises,or abnormal movements.

　　In summary,the key to identifying excavator accessories is to pay attention to details and make comparisons.Check the packaging number,inspect the workmanship and material,compare the weight,and reject abnormally low prices.Strict quality control of core hydraulic and engine components is necessary to reduce site downtime and lower maintenance costs in the later stages.